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|Occupation||Twin Head of the Tonogake Family|
|Relatives||Kiyoha Tonogake (Older Twin Sister)|
|Manga Debut||Chapter 26: Even the Cat Would Not Interfere in a Fight Between a Dog and a Monkey (Face Covered)|
Chapter 27: He Who Chases Two Rabbits at the Same Time Catches Neither
He has a cowardly personality and it's hard for him to talk back to other people. He is also very hesistant in his actions and thinks before he acts.
He has short, dark hair with a tuft on the middle of his forehead. He has shorter hair but wears his hair in a similar hairstyle as his sister's.
Masaki (正樹): Masa (正) means "justice", while ki (樹) means "wood" or "timber trees".
Tonogake (卯ノ崖): To (卯) means the "fourth sign of the Chinese zodiac, the sign of the rabbit". No (ノ) is a radical and indicates possession. Gake (崖) means cliff. Altogether it means the rabbit of the cliff.
He is proficient in his sword skills and duel wields two katanas.